TNT has ordered a pilot for "Highland," a scripted drama written and executive produced by Liz Sarnoff and actress-comedian Margaret Cho, who will also star. The pilot, which is inspired by Cho's personal history with substance abuse, is a co-production of Marty Adelstein's Tomorrow Studios and Turner's Studio T, with Cho serving as executive producer

TNT has begun working with master storyteller and filmmaker Ridley Scott to develop a night of original science-fiction programming. Initial plans call for the block to serve as a showcase for hour-long series, short-form programs and other formats to be developed in collaboration with Scott. The slate is being produced by Scott's Scott Free Productions in association with Turner's Studio T, with Scott and David W. Zucker serving as executive producers and Jordan Sheehan and Clayton Krueger as co-executive producers.

TNT has cast Daveed Diggs, who earned a Tony® for the Broadway hit "Hamilton," to star in the network's drama pilot "Snowpiercer," which will be directed by "Doctor Strange" helmer Scott Derrickson. Derrickson will also serve as an executive producer on the series.

Atmospheric mystery-thriller about the complexities of friendship is being written by Megan Martin and produced by John Wells Productions and Fabrik Entertainment, in association with Warner Horizon Scripted Television and Studio T.

Morally complex thriller about three damaged people is executive-produced by Bruna Papandrea ("Big Little Lies"); Harriet Warner ("Call the Midwife," "Mistresses"), who is also writing the script; and Casey Haver of Made Up Stories.

Tomorrow Studios will produce the pilot, which will be executive-produced by writer/showrunner Josh Friedman; Bong Joon Ho of the original film; and Marty Adelstein and Becky Clements of Tomorrow Studios.

Pilot about middle-class families of different races is being produced by John Wells Productions, in association with Warner Horizon Television and Studio T, and written by Sherman Barrios, who is also the creative force behind TNT's "Claws" dramedy pilot.